I logged into Server 2012 on our domain with my administrator account through a remote desktop connection. I locked the computer to do some other things and now when I try to log back in it tells me I need to be added to Remote Desktop Users to log back in. This is odd because I was just logged in, I check AD and I indeed am in the RDU group. I remove myself and re-add myself, still can't log in. I delete and recreate my account with all the necessary permissions, still can't log in. I even tried the builtin domain admin account, that can't log in either, same message.
What is happening and how do I get back into the machine??